US Robotics 002805-00 Getting Started page 35

2
If you are to originate the connection, type the following
command:
ATD <Enter>
NOTE: Be sure the modem is not set to X2, X4, X6 or X7,
or it will return the NO DIAL TONE result code and
hang up.
3
The remote user should type the answer command:
ATA <Enter>
4
If the remote modem also has handset exclusion, leave both
phones off hook in case you wish to switch back again to
voice after your data transfer. If the remote modem doesn't
have handset exclusion, switching back to voice may not be
successful. If you don't want to switch back to voice later,
hang up both phones as soon as the modems go off hook.
Changing the Function of the Voice/Data Switch
Use Register S32 to set the voice/data switch for the function
you desire. The default is S32=1 pressing the switch forces the
modem off hook in Originate mode.
Holding the switch in when you power on the modem causes it
to perform a power-on self-test.
NOTE: Some of the applications listed below require pre-
configuration. Review the Chapter (from Table 4-1) in the
Courier Modems Command Reference before assigning the
Voice/Data switch function.
4-4 Courier V.Everything External Modem: Getting Started